My Grandfather's WWII Photos - Stateside & Hawaii

Hi everyone. This is my first post here so I thought I'd start off with a bang! My grandfather was a Technical Sergeant in the Army during WWII, ultimately serving on Okinawa. I have a large stack of his photos and would like to use this thread to share them with you. I have never served - my connection to the US military is through my grandfather's service and my father's service in the Ohio National Guard. You can click on any of the photos and you'll then be able to pick bigger sizes to look at.

EDIT - I think I'd also like to add that my grandfather was in every way an immigrant child of the US. In 1922, with his mother, brothers, and sisters, he escaped the routine pogroms and massacres of Jews in Ukraine. With a fake passport, the family made it through Poland to Frankfurt, where they boarded a boat to Ellis Island. He never talked about the "old country," as there probably wasn't much worth remembering. Almost 20 years later he found himself to be the oldest volunteer in his Army unit (32 years old). Maybe the Army made him an "American" in his own eyes? Too bad I can't ask him - but I'll always wonder.

So, without further adieu I will kick it off with a mystery:

WWII by m.gross196, on Flickr - This photo may have been taken on Oahu or Ft. Knox...two places I know my grandfather served. Can anyone identify the weapons and (for you eagle-eyes) maybe even the plane?!

Here are some more photos and information. Lots of Cleveland, OH-area names in the news clipping. Remember, clicking on the photo will take you to a larger photo and give you the option of blowing it up even more (look for the magnifying glass with a "+" sign in it).

TANKER - That dusty, crusty, grease-covered, dirty, sweaty, bright-eyed, fuzzie-faced,
haircut-needing, beer-drinking, underrated, over-worked, underpaid,
oversexed, little shit, who can take a tank and do more battlefield damage in
ten minutes than a Grunt squad can do all day.

This photo may have been taken on Oahu or Ft. Knox...two places I know my grandfather served. Can anyone identify the weapons and (for you eagle-eyes) maybe even the plane?!

The weapons are self-propelled howitzers - I'm guessing the numerical designation is unimportant to you. The 'plane' is impossible to identify even at the highest resolution on Flickr - and may well in fact be an ant or bug or other artifact on the negative.

68W4P, 31B4P, 0341, 0844
24 years and DONE!!!

"Even if you know that a certain illustration in an art book is from the Kama Sutra, don't point that out to your art history class. They will think you're a pervert." - seen at learnfrommyfail.com

The vehicles are either M40 155mm or M43 8" self propelled howitzers, built by the Pressed Steel Car Company (Most likely M40, as fewer than 50 M43s were made before the contract was cancelled at the end of WWII).

My grandfather wrote this to my grandmother after arriving Stateside after his deployment to Okinawa.
I thought a bit about whether I should post this, but it is a window into the past that I think everyone can appreciate.

Although my grandfather spent time on Oahu before shipping out to Okinawa, Japan, he has no pictures from Japan so it is very likely this is somewhere in Hawaii. If you see any clues, please let us know!